| Value | Category | Cases | |
|---|---|---|---|
| 2000 | 2 |
9.1%
|
|
| 2004 | 2 |
9.1%
|
|
| 2008 | 1 |
4.5%
|
|
| 2011 | 1 |
4.5%
|
|
| 2013 | 1 |
4.5%
|
|
| 2015 | 2 |
9.1%
|
|
| 2016 | 11 |
50%
|
|
| 2017 | 1 |
4.5%
|
|
| 2018 | 1 |
4.5%
|
|
| Sysmiss | 2616 |